Blow-out preventer attachment



Dec. 20, 1932. .1. H. NICKS ET AL BLOW-OUT PREVENTER ATTACHMENT Original Filed April 16. 1931 2 Sheets-Sheet 1 WMNW lnvcnlqrs J A/Ms Y E E M0 @202 Dec. 20, 1932.

J. H. NICKS ET AL BLOW- OUT PREVENTER ATTACHMENT Original. Filed April 16. 1931 2 Shets-Sheet 2 Inventors ll z'ozs T F EI/l/MZH' By g2 flliorney parts, which are easil and Patented us so, 1932 UNITED STATES PAgiENT- OfFlCE Jon 1;. mm am: my a. Muslim, or ,conrn's cmusrr,

1 snow-our rnmu'rna arms 7 Application filed April 1Q 1881, Serial Io. 580,650. Renewed October 14, I

This invention relates to an improved at tachment for blow-out preventers and par- .ticularly to an attachment of the type de-- scribed which has the features of novelty and advanta which will be more fully ungzlrstood as e description thereof proceeds It is an object of this invention to provide an attachment of the type described which is not. only simple ,to operate and install; gged guickly manipubut which is composed of few and ru able, and which can r need at a relatively low cost and attac ed to certain types ofstandardblowout reventcr heads, and may, with sli ht modi cation, beattached to any type of b ow-out preventer head or" cas-. in employing the ram type of structure.

A fi'hese and other objects of the invention,

. its nature, its com osition and arrangement parts will be readily un- 'derstood by anyone" acquainted with the art and combination 0 to which this invention relates upon consulting the following descriptions of the drawin? in which 1 re -1 is a side elevational vlew ofthe attac ent in place on'a standard blow out preventer head or casing.

Figure 2 is a vertical longitudinal sectional view through Figure 1 disclosing the rams retracted position.

- Figure 3 is a view similar to Fi Q except that the rams are shown in exten ed position.

Fi e4 is a horizontal sectional view a proximately on the line 4-4 of Figure 1 loo 1n downwardly.

ieferring in detail to thef drawings, the

' numeral. 5 generally designates a standard t of blow-out head, or casing comprising t e horizontal cylinder 6 in which shde the rams 7, and the numeral 8 refers to the upward extension of the head or casin "5 and the numeral 9 refers to the downwar extension of the casin 5, the extensions 8 and 9' communicating'wlth the interior of the cylinder 6. The ends of the cylinder 6 are interiorly screw-threaded as indicated at 10 to receive a cylindrical, flanged block 11.

which is a flange 13 exteriorly screw-threaded of the cylinder 6. The block 11 has in its outward end a screw-threaded recess 14 adapted to receive a screw-threaded ni ple 15 on the inwardlyl disposed end. of a b 001:"

16 which has a ho ow nipple 17 on its outto engage the interior. threads 10 in the end wardly disposed end, the mpple 17 being both adapted to be received in the outwardly disposed end of the block 16 to com ress'a ackm 22 in the recessed'end of e bloc 16. A apted for inwa d and outward movement through the block 11,1the block 16, the tubular nut 21 and the sleeve 18, is a shaft go on ally designated 23 having its inward end ducedv and screw-threaded as at 24 into one of the rams 7. An intermediate portion of the shaft designated 25 is enlar and forms shoulders 26, 27, the shoul er 27 bei formed by another plane reduced portion outward of the enlarged portion 25. It will alsobenoted that the outward end portion of the shaft 23 is further reduced as at 29 and vsquared at 30 for receivin appropriate turn- 7 is stated that slid- Blane portion 28 of the shaft 23 is a lar e-tu ular exteriorl screW-threald-,

in means. .'It has yet to ab e upon the ed nut 31 or screw-thread y enga interior screw-threads 20 in' the outwar end of the sleeve 18. Suitable means sug end of the end at 32 maybe provided for rotating the tubular Y wardly through the packin nut 21, the block 16 and the block'11 where to push the ad- 'acent ram 7 inwardly in we known manner.

t should further be stated that the blocks 11 are provided at their undersides with a fluid passage 33 with suitable piping 34 for con- .ve 'n fluid under pressure mto the cylinder nd the rams 7 for forcing them inwardly against the pressure of ab owing out well to close the reventer to prevent blowing of the tools an .the loss of the flow of the well.

It will be obvious that the structure described incorporates the large tubular nut "31 which constitutes a very important ther evident that turning the shaft 23 independently of the movement of the locking nut 31 will result in positioning the ram 7 either inwardly or outwardly with respect to the vertical passage of the blow-out head or casing. It will be observed that the locking nut 31 is provided with the flange or shoulder for preventing the possibility of its-being screwed completely out of the'sleeve 18. Of course, the packing nut 21 functions in an obvious mannerto compress the packing 22 about the enlarged portion 25 of the shaft 23 so as to prevent the escape of fluid. It will also be observed that the shoulder 26 on the enlarged portion 25 of the shaft 23 in the said cases adapts it to abut the shoulder 36 of the ram 7. The packing nut 21 is easily reached through the opening 19 in the sleeve 18, radial holes 36 being provided in the periphery of the flanged portion of the packin nut to permit insertion of a turning tool.

In Figures Land 4 appear stud bolts 38 which project radially through the side of the cylinder 6 for engaging in a groove in each of the rams .7 for preventing turning of the rams in the operation of rotation of the shaft 23.

Inasmuch as each side of the preventer attachment described herein isidentical in construction, the description of one is deemed suflicient to describe the other, it being understood that one is useless without the other and that they cooperate to bring about the result sought.

It is to be definitely understood that we .do not desire to limit the application of this invention to the particular modification set out herein to illustrate the principles thereof, and any change or changes may be made in materials and arrangement of parts in the structure consistent with the spirit and scope of the invention.

What is claimed -is s 1. A blow-out preventer of the type described comprising in combination a standard ram head havingthe ends of its horizontal cylindrical portions interiorly screwthreaded, a cylindrical block'screw-threaded into each of tl: said horizontal portions having in turn'screw-threaded thereinto another block having shaft packin means in its outward end, a shaft slida le through said 1 blocks, a hollow sleeve screw-threaded to ex-- tend axially outward from said other block the outward end portion of which is interior- 1y screw-threaded. a, locking nut slidable on a reduced portion of said shaft and engageable with said interiorly screw-threaded portion of the sleeve and adapted to be rotated to abut a shoulder formed by said reduced portion of the shaft with the balance of the shaft to prevent outward movement of the shaft, said shaft being connected at its inner end with one of the rams in the ram head.

2. A blow-out preventer of the type described comprising in combination a standscrew-threaded to extend axially outward from said other block the b itward end portion .of which is interiorly screw-threaded, a locking nut slidable on a reduced portion of said shaft and engageable with said interiorly screw-threaded portion of the sleeve and adapted to be rotated to abut a shoulder formed by said reduced portion of the shaft with the balance of the shaft to prevent outward movement of the shaft,said shaft being connected at its inner end with one of the rams in the ram head, said inner end of theshaft being reduced and screwthreadedto engage in the ram, and the shaft having means at its outer end for rotating the same to move the ram independently of the locking nut.

3. A blow-out preventerof the type described-comprising in combination a standard ram head having the ends of its horizontal cylindrical portions interiorly screwthreaded, a cylindrical block screw-threaded into each end of the said horizontal portions having in turn screw-threaded thereinto an- I other block having shaft acking means in its outward end, a shaft sli able through said blocks, a hollow sleeve screw-threaded to extend axially outward from said other block the outward end portion of which is inter riorly screw-threaded, a locking nut slidable on a reduced portion of said shaft and engageable'with said interiorly screw-threaded portion of the sleeve and adapted to be roing the same to move the ram independently shaft having means at its outer end for rotatof the locking nut, and a' fluid connection through each of said cylindrical blocks communicating with the interior of the ram head for .introducin fluid under pressure behind each of said rams.

4. A blow-out preventer of the type described, comprising in combination a standard ram headhaving the ends of its horizontal c lindrical portions interiorly screw- 5 threaded: a cylindrical block screw-threaded into each end of the said horizontal portions having in turn screwthreaded theremto ana other block having shaft packing means in.

6 its outward end, a shaft slidable throu h said 10 blocks, a hollow sleeve screw-threade to extend axially outward from said other block the outward end portion of which is interiorly screw-threaded, a locking nut slidable on a reduced portion of said shaft and engageable with said interiorl screw-threaded portion of the sleeve an adapted to be rotated to abut a shoulder formed by said 1 reduced portion of the shaft with the balance of the shaft to prevent outward movement of 2 the shaft, said shaft being connected at its inner end with one of the rams in the ram head, said inner end of the shaft being re-' duced and screw-threaded to engage in the ram, and the shaft having means at its outer end for rotating the same to move the ram independently of the locking nut, said looking nut having a flange at its inward end for preventing screwing rotating the locking nut out of the-sleeve, i 5. A blow-out preventer of the type described comprising in combination a standard ram head having the ends of its horizontal cylindrical portions interiorly screwthreaded, a cylindrical block'screw-threaded into each end of the said horizontal portions having in turn screw-threaded theremto another block having shaft sacking means in its outward end, a shaft sli able throu h said *blocks, a hollow sleeve screw-three ed to 40 extend axially outward from said other block the outward end ortion of which is interiorly screw-threade a locking nut slidableon a reduced portion of said' shaft and en ageable with said interiorly screw-threade portion of the sleeve and edit ted to be rotated to abut a shoulder forme by said reduced portion of the shaft with the balance of the shaft to? revent outward movement of'th'e shaft, sai shaft being connected at its inner end with one of the rams in the ram head.

In testimony whereof we afiix oursignatures.

- wJOE H. NIGKS.

ELERY E. MOSHER. 

